一种四单元三频MIMO天线设计

A Compact Quad Elements MIMO Antenna for Tri-band Application

设计了一款四单元三频段的MIMO天线,天线的工作频率能够覆盖我国目前5G通信的3个频段n41/n78/n79。单元天线辐射贴片用2个枝节,地板用1个枝节,实现了三频段工作。为了实现小型化,对枝节进行了弯折。通过合理布局4个单元天线,并在辐射贴片上增加寄生单元,提高了天线的隔离度。天线的工作频段为2.42~2.7GHz、3.15~3.62GHz和4.3~5.3 GHz,在中心频点处的最大增益分别为3.03、2.61和4.72 dBi,具有较好的全向辐射特性。

A quad elements MIMO antenna with three frequency bands is proposed,which can cover the three frequency bands n41/n78/n79 of current 5G communication in China.The antenna unit element radiation patch has two branches and the ground has one branch.In order to realize miniaturization,the branches are bent.The isolation of the antenna is improved by arranging four antenna elements rationally and adding parasitic patch to the radiation patch.The working frequency bands of the antenna are 2.45~2.7 GHz,3.15~3.62 GHz,4.3~5.3 GHz,and the maximum gain at the central frequency are 3.03,2.61,4.72 dBi,with good omnidirectional radiation patterns.